Brake cable tightening device

Abstract

The utility model discloses a brake cable tightening device and relates to the technical field of brake mechanisms, the brake cable tightening device comprises a shell and a cover plate, fixed wheels are connected to both sides in the shell, a sliding table is connected in the shell, and a pulley is connected to the top of the sliding table; a tension spring is connected between the sliding table and the shell; ratchet plates penetrate through the two sides of the bottom of the sliding table, first springs are connected to the tops of the ratchet plates, and two ratchet grooves are formed in the lower portion in the shell. Through the arrangement of the sliding table, the pulley, the fixed wheel and the tension spring, the tail end of the brake cable is bent and wound through the pulley and the fixed wheel, when the brake cable is loosened, the tension spring pulls the sliding table to move backwards so as to drive the pulley to move backwards, and after the pulley moves, a local area of the tail end of the brake cable is pulled into the shell, so that the extension length of the brake cable is compensated; the brake cable is automatically tightened; manual adjustment is not needed, time and labor are saved, and tools are not needed.

Description

Technical Field

[0001] This utility model relates to the field of brake mechanism technology, specifically a brake cable tightening device. Background Technology

[0002] Brake cables are commonly used in vehicles such as bicycles and motorcycles. The first end of the brake cable is connected to the brake lever, and the second end is connected to the brake assembly, thus forming a complete braking mechanism. When in use, pressing down on the brake lever pulls the brake cable, which transmits the tension to the brake assembly, causing the brake assembly to move and conform to the wheel, thereby braking through friction.

[0003] After a period of use, brake cables will stretch, meaning they become longer. This increased length weakens the connection between the brake lever and the brake components. In other words, when the brake lever is pressed down, the contact pressure between the brake components and the vehicle decreases, resulting in weaker braking force and affecting riding safety.

[0004] When the above phenomenon occurs, the existing technology usually involves loosening the bolt used to tighten the brake cable end, then pulling the brake cable to tighten it, and then tightening the bolt again to press the brake cable down. The operation is cumbersome and requires a wrench. Moreover, it is generally difficult to detect when the brake cable is loose. When it is discovered, the brake is usually in the braking state. However, the loose brake cable reduces the braking force and increases the braking distance, which is quite dangerous and poses a certain safety hazard. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a brake cable tightening device to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a brake cable tightening device, comprising a housing and a cover plate, wherein fixed wheels are connected to both sides inside the housing, a slide is connected inside the housing, and a pulley is connected to the top of the slide; a tension spring is connected between the slide and the housing; ratchet plates penetrate through both sides of the bottom of the slide, and a first spring is connected to the top of the ratchet plates; and two ratchet grooves are formed at the bottom inside the housing.

[0007] By adopting the above technical solution, when the brake cable becomes slack, the tension spring pulls the slide table backward, thereby causing the pulley to move backward. After the pulley moves backward, it pulls a local area of ​​the tail end of the brake cable into the housing, thereby compensating for the length of the extended brake cable and automatically tightening the brake cable. When the pulley moves backward, the ratchet plate is pushed open by the ratchet groove and compresses the first spring. When the slide table stops, the first spring drives the ratchet plate into the ratchet groove, thereby preventing the slide table and pulley from moving forward and causing the brake cable to become slack again.

[0008] Furthermore, the slide has an "I" shaped cross-section and is slidably connected to the outer shell.

[0009] By adopting the above technical solution, when the brake cable is slack, the tension spring pulls the slide table backward, which in turn drives the pulley to move backward. After the pulley moves, it pulls a local area of ​​the tail end of the brake cable into the outer shell, thereby compensating for the length of the extended brake cable and automatically tightening the brake cable.

[0010] Furthermore, the pulley is rotatably connected to the slide table, and the two ends of the two fixed wheels are rotatably connected to the outer casing and the cover plate, respectively.

[0011] By adopting the above technical solution, while the pulley pulls the end of the brake cable, the pulley can rotate on the slide table, and the fixed wheel can rotate in the outer casing, thus avoiding large friction and wear between the end of the brake cable and the collecting device.

[0012] Furthermore, the ratchet plate is slidably connected to the slide, and the ratchet plate abuts against the ratchet groove.

[0013] By adopting the above technical solution, when the slide stops, the first spring drives the ratchet plate into the ratchet groove, thereby preventing the slide and pulley from moving forward and causing the brake cable to loosen again.

[0014] Furthermore, a cover plate is connected to the top of the outer casing, and bolts penetrate both sides of the top of the cover plate; brake cable tails penetrate both sides of the back of the outer casing, and threaded pressure rods penetrate the back of the outer casing.

[0015] By adopting the above technical solution, the workers put the tail end of the brake cable into the housing and pass it around the pulley and fixed wheel. Then, the workers attach the end of the brake cable to the back of the housing and press the tail end of the brake cable with the threaded pressure rod to prevent the tail end of the brake cable from falling off. After that, the workers can cold press a terminal head at the end of the brake cable to prevent the multiple wires inside the tail end of the brake cable from scattering.

[0016] Furthermore, the bolt is threadedly connected to the outer casing, and the cover plate is detachably connected to the outer casing.

[0017] By adopting the above technical solution, the staff can remove the bolts and then remove the cover plate to carry out the disassembly and assembly operations. After the disassembly and assembly are completed, the staff put the cover plate back and put the bolts back in for limiting.

[0018] Furthermore, the threaded pressure rod is threadedly connected to the outer casing, and the threaded pressure rod abuts against the tail end of the brake line.

[0019] By adopting the above technical solution, the workers attach the end of the brake cable to the back of the outer casing and press the end of the brake cable tightly with a threaded pressure rod to prevent the end of the brake cable from falling off.

[0020] Furthermore, a limiting plate is connected to the upper part of the inner shell, and a second spring is connected to the bottom of the limiting plate, and a limiting groove is formed at the bottom of the slide.

[0021] By adopting the above technical solution, after the slide moves forward, it abuts against the limiting plate, causing the limiting plate to move down and compress the second spring. As the slide continues to move forward, the limiting groove aligns with the limiting plate. At this time, the second spring drives the limiting plate to move up and enter the limiting groove to limit the slide, thus preventing the tension spring from pulling the slide during the subsequent threading process and affecting the operation. After the cover plate is reinstalled, it abuts against the limiting block, causing the limiting block to move down and separate from the limiting groove, thereby ending the limitation of the slide and facilitating the subsequent tension spring to pull the slide to move and tighten the brake line.

[0022] Furthermore, the limiting plate has a "J" shaped cross section and is slidably connected to the outer shell, with the top of the limiting plate abutting against the cover plate.

[0023] By adopting the above technical solution, after the cover plate is reinstalled, it will press against the limiting block, causing the limiting block to move down and separate from the limiting groove, thereby ending the limiting of the slide table and facilitating the subsequent tension spring to pull the slide table to move and tighten the brake line.

[0024] Furthermore, the limiting plate abuts against the outer surface of the slide table, and the limiting plate is detachably connected to the limiting groove.

[0025] By adopting the above technical solution, the slide moves forward and then abuts against the limiting plate, causing the limiting plate to move down and compress the second spring. As the slide continues to move forward, the limiting groove aligns with the limiting plate. At this time, the second spring drives the limiting plate to move up and into the limiting groove to limit the slide, thus preventing the tension spring from pulling the slide during the subsequent threading process and affecting the operation.

[0026] In summary, the present invention has the following main advantages:

[0027] 1. This utility model uses a slide table, pulleys, fixed wheels, and tension springs. The pulleys and fixed wheels bend and wrap around the tail end of the brake cable. When the brake cable becomes slack, the tension spring pulls the slide table backward, which in turn moves the pulley backward. After the pulley moves, it pulls a portion of the tail end of the brake cable into the outer casing, thereby compensating for the elongation of the brake cable and automatically tightening it. No manual adjustment is required, saving time and effort and eliminating the need for tools.

[0028] 2. This utility model, through the arrangement of a ratchet plate, a first spring, and a ratchet groove, ensures that when the pulley moves backward, the ratchet plate is pushed open by the ratchet groove and the first spring is compressed. When the slide stops, the first spring drives the ratchet plate into the ratchet groove, thereby preventing the slide and pulley from moving forward and causing the brake cable to loosen again, thus improving stability. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a top-sectional view of the present invention.

[0031] Figure 3 This is a side sectional view of the slide structure of this utility model;

[0032] Figure 4 This is a side sectional view of the outer shell structure of this utility model;

[0033] Figure 5 For the present utility model Figure 4 Enlarged view of the structure at point A in the image.

[0034] In the diagram: 1. Outer shell; 2. Cover plate; 3. Bolt; 4. Brake cable end; 5. Threaded pressure rod; 6. Slide table; 7. Pulley; 8. Fixed wheel; 9. Tension spring; 10. Racket plate; 11. First spring; 12. Racket groove; 13. Limiting plate; 14. Second spring; 15. Limiting groove. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] The embodiments of this utility model will be described below based on its overall structure.

[0037] Example 1:

[0038] A brake cable tightening device, such as Figures 2-5 As shown, the device includes an outer shell 1 and a cover plate 2. Fixed wheels 8 are connected to both sides of the interior of the outer shell 1, with their ends rotatably connected to the outer shell 1 and the cover plate 2, respectively. A sliding table 6 is connected inside the outer shell 1. The sliding table 6 has an "I"-shaped cross-section and is slidably connected to the outer shell 1. A pulley 7 is connected to the top of the sliding table 6 and is rotatably connected to it. A tension spring 9 connects the sliding table 6 to the outer shell 1. Racket plates 10 extend through both sides of the bottom of the sliding table 6 and are slidably connected to it. A first spring 11 is connected to the top of the ratchet plate 10. Two openings are located at the bottom of the interior of the outer shell 1. The ratchet groove 12 and the ratchet plate 10 abut against the ratchet groove 12. When the brake cable is loose, the tension spring 9 pulls the slide 6 to move backward, thereby driving the pulley 7 to move backward. After the pulley 7 moves, it pulls a part of the tail end 4 of the brake cable into the housing 1, thereby compensating for the length of the extended brake cable and automatically tightening the brake cable. When the pulley 7 moves backward, the ratchet plate 10 is pushed open by the ratchet groove 12 and compresses the first spring 11. When the slide 6 stops, the first spring 11 drives the ratchet plate 10 into the ratchet groove 12, thereby preventing the slide 6 and pulley 7 from moving forward and causing the brake cable to loosen again.

[0039] See Figure 1. Figure 2 and Figure 4In the above embodiment, a cover plate 2 is connected to the top of the outer shell 1. The cover plate 2 is detachably connected to the outer shell 1. Bolts 3 pass through both sides of the top of the cover plate 2 and are threadedly connected to the outer shell 1. Brake cable tail ends 4 pass through both sides of the back of the outer shell 1. A threaded pressure rod 5 passes through the back of the outer shell 1 and is threadedly connected to the outer shell 1. The threaded pressure rod 5 abuts against the brake cable tail ends 4. The operator puts the brake cable tail ends 4 into the outer shell 1 and passes it around the pulley 7 and the fixed wheel 8. Then, the operator presses the end of the brake cable tail ends 4 against the back of the outer shell 1 and presses the brake cable tail ends 4 tightly with the threaded pressure rod 5 to prevent the brake cable tail ends 4 from falling off. Afterward, the operator can cold-press a terminal head at the end of the brake cable tail ends 4 to prevent the multiple steel wires inside the brake cable tail ends 4 from scattering.

[0040] Example 2:

[0041] Based on the above embodiment one, the following settings are made to facilitate the installation of the brake cable tail end 4.

[0042] See Figures 2-5 In the above embodiment, a limiting plate 13 is connected to the upper part of the inner shell 1, and a second spring 14 is connected to the bottom of the limiting plate 13. The limiting plate 13 has a "J" shaped cross section and is slidably connected to the outer shell 1. The top of the limiting plate 13 abuts against the cover plate 2. A limiting groove 15 is formed at the bottom of the slide table 6, and the limiting plate 13 abuts against the outer surface of the slide table 6. The limiting plate 13 and the limiting groove 15 are detached and connected. After the slide table 6 moves forward, it abuts against the limiting plate 13, causing the limiting plate 13 to move downward. The second spring 14 is moved and compressed. As the slide table 6 continues to move forward, the limiting groove 15 aligns with the limiting plate 13. At this time, the second spring 14 drives the limiting plate 13 to move upward and enter the limiting groove 15 to limit the slide table 6, thus preventing the tension spring 9 from pulling the slide table 6 and affecting the operation during the subsequent wire threading process. After the cover plate 2 is reinstalled, it will press against the limiting block, causing the limiting block to move downward and separate from the limiting groove 15, thereby ending the limitation of the slide table 6 and facilitating the subsequent movement of the tension spring 9 to pull the slide table 6 to tighten the brake line.

[0043] The implementation principle of this utility model is as follows: First, during installation, the worker removes the bolt 3 and then the cover plate 2. Next, the worker pulls the ratchet plate 10 upwards to separate it from the ratchet groove 12. Then, the worker slides the slide table 6 forward, stretching the tension spring 9. After the slide table 6 moves forward, it abuts against the limiting plate 13, causing the limiting plate 13 to move downwards and compress the second spring 14. As the slide table 6 continues to move forward, the limiting groove 15 aligns with the limiting plate 13. At this point, the second spring 14 drives the limiting plate 13 upwards into the limiting groove 15, limiting the slide table 6 and preventing the tension spring 9 from pulling the slide table 6 during subsequent threading, thus affecting the operation. Afterwards, the worker releases the limiting plate 13, causing the first spring 11 to drive the ratchet plate 10 downwards. The brake cable is then placed into the ratchet groove 12. The operator then inserts the brake cable tail 4 into the housing 1 and passes it around the pulley 7 and fixed wheel 8. The operator then attaches the end of the brake cable tail 4 to the back of the housing 1 and presses it firmly with the threaded pressure rod 5 to prevent it from falling off. A terminal head can then be cold-pressed onto the end of the brake cable tail 4 to prevent the multiple wires inside from unraveling. After assembling the brake cable tail 4, the operator puts the cover plate 2 back and reinstalls the bolts 3 for positioning. After the cover plate 2 is reinstalled, it will press against the limiting block, causing the limiting block to move downwards and separate from the limiting groove 15, thus ending the positioning of the slide 6 and facilitating the subsequent movement of the tension spring 9 to pull the slide 6 and tighten the brake cable.

[0044] When the brake cable becomes slack, the tension spring 9 pulls the slide 6 backward, which in turn moves the pulley 7 backward. After the pulley 7 moves backward, it pulls a portion of the tail end 4 of the brake cable into the housing 1, thereby compensating for the length of the extended brake cable and automatically tightening the brake cable. When the pulley 7 moves backward, the ratchet plate 10 is pushed open by the ratchet groove 12 and compresses the first spring 11. When the slide 6 stops, the first spring 11 drives the ratchet plate 10 into the ratchet groove 12, thereby preventing the slide 6 and pulley 7 from moving forward and causing the brake cable to become slack again.

[0045] When the brake cable breaks, the staff only needs to remove the cover plate 2 and bolt 3, and then loosen the threaded rod 5 to disassemble the brake cable end 4.

[0046] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A brake cable tightener comprising a housing (1) and a cover plate (2), characterised in that: The outer shell (1) has fixed wheels (8) connected to both sides inside. The outer shell (1) has a slide (6) connected inside, and a pulley (7) is connected to the top of the slide (6). A tension spring (9) is connected between the slide (6) and the outer shell (1). A ratchet plate (10) runs through both sides of the bottom of the slide (6), and a first spring (11) is connected to the top of the ratchet plate (10). Two ratchet grooves (12) are opened at the bottom inside the outer shell (1).

2. A brake line take-up device according to claim 1, characterised in that: The slide (6) has an "I" shaped cross section and is slidably connected to the outer shell (1).

3. A brake line take-up device according to claim 2, characterised in that: The pulley (7) is rotatably connected to the slide (6), and the two ends of the two fixed wheels (8) are rotatably connected to the outer shell (1) and the cover plate (2) respectively.

4. A brake line take-up device according to claim 2, characterised in that: The ratchet plate (10) is slidably connected to the slide (6), and the ratchet plate (10) abuts against the ratchet groove (12).

5. The brake line take-up device of claim 1 wherein: The top of the outer shell (1) is connected to a cover plate (2), and bolts (3) are passed through both sides of the top of the cover plate (2); the tail end (4) of the brake line is passed through both sides of the back of the outer shell (1), and a threaded pressure rod (5) is passed through the back of the outer shell (1).

6. A brake line take-up device according to claim 5, characterised in that: The bolt (3) is threaded to the outer shell (1), and the cover plate (2) is detachably connected to the outer shell (1).

7. A brake line take-up device according to claim 5 wherein: The threaded pressure rod (5) is threadedly connected to the outer shell (1), and the threaded pressure rod (5) abuts against the tail end (4) of the brake line.

8. The brake line take-up device of claim 5 wherein: The upper part of the outer shell (1) is connected to a limiting plate (13), and the bottom of the limiting plate (13) is connected to a second spring (14). The bottom of the slide (6) is provided with a limiting groove (15).

9. A brake line take-up device according to claim 8, characterised in that: The limiting plate (13) has a "J" shaped cross section and is slidably connected to the outer shell (1). The top of the limiting plate (13) abuts against the cover plate (2).

10. A brake line take-up device according to claim 9, characterised in that: The limiting plate (13) abuts against the outer surface of the slide (6), and the limiting plate (13) is detachably connected to the limiting groove (15).

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